US3620808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a thermal emissivity coating on a metallic substrate
Assignee: JAMES E MONROE JR
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Filing: 1968-01-05
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Granted: 1971-11-16
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Expires: 1988-01-05
Abstract
Abstract A method for coating metallic substrates with high thermal emissivity coatings to prevent failure of the thermal emissivity coatings due to handling and thermal shock by applying an intermediate or base coat of nickel aluminide.
Inventors
- 👤 James E Monroe Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:59
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/02; C23C4/04; C23C4/10; C23C4/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
The invention of claim 1 including the steps of flame spraying a first coat of 100 percent nickel aluminide 0.004 inches thick on said substrate, flame spraying a second coat on said first coat of 65 w/o nickel aluminide and 35 w/o A12O3 having a thickness of 0.002 inches, flame spraying a third coat on said second coat of 35 w/o nickel aluminide and 65 w/o A12O3 having a thickness of 0.002 inches, and flame spraying a top coat on said third coat of 100 w/o A12O3 having a thickness of 0.002 inches.
References Cited (Backward Citations)
US2966430A
Cited
US3326648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |